Device for use in the application of piston-rings to pistons



J. H. HUBBLE.

DEVICE FOR use IN .THE APPLICATION OF PISTON RINGS T0 PISTONS.

APPLICATION FILED FEB. 27, 1920.

1: l1. HUBBLE. DEVICE FOR USE lN' lT HE APPLICATION OFPIST-ON RINGS T0 PISTONS.

APPLICATION FILED FEB. 21,1929:

Patented Apr.-19, 1921.

'2 SHEETS-SHEET 2.

g UNITED STATE-S A EN T' OFFICE- JOE H. HUBBLE,

or TEKOA, wAsHINeromAssreNoE TOGRANT MccAnN AND EoBEE'r L. RAGON, or 'TEKOA, WASHINGTON.

DEVICE r03 USE IN THE APPLICATION OF PISTON-RINGS T0 rrsrons.

T 0 all'whomz't may concern:

' Be it known that I, J on H. HUBBLE, a citizen of .the United States residing at Tekoa, in the' county of Whitman and State of Washington, have invented certain new and useful Improvements in Devices for Use in the Application of Piston-Rings to Pistons, of which the following is a specification.

This invention relates todevices for applyingpiston rings to pistons and has as its general object to provide a' device. which may be readily. and conveniently manipulated for the purpose of slipping the rings onto the piston without likelihood of distortion, spreading or breaking of the rings.

Another object of the invention is to so construct the device that when the occasion arises, it may be. employed in guiding a ring over or past another ring or other rings which are already in place upon the piston, and this without any undue distortion of the ring being applied.

Another object of the invention is to" so construct the device that the terminal portions of a ring being applied by the use of the device will be given the proper support and thus be'prevented from springing inwardly to such an extent as to interfere with proper application of the ring.

A further object ofthe invention is to provide for adjustment of the device so as :to adapt the same for application to pistonsof various diameters.

In the accompanying drawings:

Figure l is a perspective view of the device embodying the present invention, the view illustrating thedevice applied to a piston and illustrating the manner in which a piston ring may be slipped into place through the use of the device;

Fig. 2 is a perspective view illustrating the guiding members of the device in assembled relation but disassembled from the remainder of the device;

Fig. 3 is a top plan view of the device in Luse, :the full lines illustrating the device asapplied to a smallpiston and the dotted lines illustrating-the adjustment of the'devic'e to 1 adapt it for application to a piston of larger diameter; 1

Fig. 4 is a horizontal sectional view through the device applied;

Fig; 5 is a vertical diametric sectional "view through the device applied;

Specification of Letters Patent. Application filed February 27, 1920. Serial No; 361,684.

atented Apr. v19, 1921.

Fig. dis a perspective view of thespider member of the device.

In the drawings the numeral l indicates in general a piston of any of the ordinary-- 7 types and which piston isprovided with the usual circumferential grooves 2 for the receptionof the piston rings which are indicated by the numeral'3.: I

The device embodying the invention is ap-'- plicable to the piston in a manner which will presently be explained and includes in its structure guiding members having fingers which-extend beside the circumferent1al surface of the piston when the device isapplied and over which the piston rings may he. slipped and by which they are guided. I

These guiding members are indicated in general by the numeral 4 andin the present instance four' ofthe members are employed althoughit Wlll be understood that the numher may be increased or decreased if found desirable. Inasmuch as the members are of counterpart construction, a description of;

one will suffice for'all; 'Each member comprises a head portion 5 bifurcated as at 6 to provide spaced portions 7, and this head portion 5 .is provided at its outer end with an arm 8 terminating in a relatively long; and thin finger 9 which projects downwardly at right angles from the arm and which is of a length nearly equal to the length of the longest piston to which the device will be applicable.- If desired a suitable scale 10 be marked off upon the upper side of'each arm 8. The bifurcations 6 are formed longitudinally in the'head portions 5 of the guiding members and in assembling these members they are arranged; with their bifurcated head portions in superposed relation substantially as shown in Fig.

"2 of the drawings.

The numeral 11' indicates a feed screw which is swiveled at its lower end as at 127',

to a bearing plate 13, and which at its upper end is provided with a thumb nut 14 whereby it may be rotated for a purpose to be presently explained. The device also includes a spider which is clearly -illustrated in Fig. .6 and which is indicated by the nu- 'mg spaced fingers 23.

semble d with the spider rious diameters.

which is exteriorlythreaded as at 18 for the application thereto of a clamping thumb nut 20 interiorly threaded as at 21 to fit the feed screw. The spider plate 16 is provided at its periphery with radial lugs 22 each provided with terminal upstandguiding members A are "suitably adjusted, this nut may be tightdrawings.

ened so asto bind the head portions of the spiders between the plates 16 and'2 1' in the manner most clearly shown in Fig. 5 of the Of course, in manipulating the clamping nut 20 to clamp the guiding members in their positions of adjustment, the

spider 15 will be held stationary, and this is also done when the nut is to be loosened I for thepurpo'se of obtaining a new adjustment of the guiding members.

By reference to Figs. 1, 3, 1 and 6 of the drawings it will be observed that the lugs I 22 are not equidistantly spaced about the periphery of the spider plate 16 but that two of these lugs, indicated specifically by the numeral 22 to distinguish them from the other lugs are located relatively close together or in any event closer than they are to any of the said other lugs, so that the guiding members which are assembled with these lugs 22 will have their guiding fingers likewise located closer to each other than to the fingers of the other guiding members. The purpose of this arrangement will presently be'made clear.

In the use of the device, the guiding members are radially adjusted, after the clamping nut 20 has been loosened, until it is determined, as for example by reference to the registration. of the marks of the scales 10' with the periphery of the spider plate 16, that the proper adjustment has been obtalned to adapt the fingers of the guiding members to fit closely to the circumferential surface of the piston to which the ring or rings are to be applied; The clamping nut 20 is then tightened and the device is applied to the piston by fitting it onto the piston so that the guiding fingers 9 will ex tend beside the said circumferential surface of the piston in the manner clearly shown in Figs. 1 and 5 of the drawings. In thus The arms 8 of the. disposed slidably' between the fingers 23 of respective ones ready in place so as been til it snaps into its respective groove 2, the

feed screw 11 having been previously adjusted so as to bring the lower ends of the fingers 9 substantially flush with the upper side of the said groove. It will be evident that the feed screw 11 may to bring the terminals of the guiding fingers into proper position with relation to one of the grooves formed in the piston 1 and it will further be evident, particularly by reference to Figs. land 5, that the fingers may extend over rings which are alto guide another ring which is to be applied over the first mentioned rings. By reference to Figs. 1 and 3 it will be noted that the fingers of the guiding members which are associated with the lugs 22, close to each other, are so positioned that when the piston ring to be applied is slipped over all of the fingers in proper position the terminal portions of the ring will be supported by these two therefore be preventedfrom springing inwardly to an extent which would cause them to come in contact with the rings already applied or with the walls of the and which are located relatively fingers and will grooves which at the time are not occupied with rings.

Having thus described the invention, what is claimed new is: V

1. A device for use in the application of piston rings to pistons comprisingan assemblage of guiding members having parallel fingers to extend beside thecircumferential surface of a piston to which the device is to be applied.

2. A device. for use in theapplication of piston rings to pistons comprising an'assemblage of guiding members having parallel fingers to extend beside'the circumferential surface of a piston to which the device is to'be applied, and means whereby the members may be adjusted radially, without disturbing the parallelism of the fingers.

3. A device for use in the application of piston rings to pistons comprising an assemblage of guiding members having paral lel fingers to extend beside the circumferential surface of a piston to which the'defor radial adjustment with relation thereto, the guiding members having fingers to extend beside the circumferential surface of a piston to which the device is to be applied.

5. A device for use in the application of piston rings to' pistons comprising a head, a plurality of guiding members having head portions assembled in intersecting relation and radially adjustable with relation to the head, and a guiding finger extending downwardly from each of the guiding members.

6. A device for use in the application of piston rings to pistons comprising a head, means adjustably assembled with the head and designed to coact with the head of a piston and operable to feed the head toward and away from the piston, and guiding members carried by the head and having guiding fingers to extend beside the circumferential surface of a piston to which the device is to be applied.

7. A device for use in the application of piston rings to pistons comprising a head, means adjustably assembled with the head and designed to coact with the head of a piston and operable to feed the head toward and away from the piston, and guiding members carried by the head and having guiding fingers to extend beside the circumferential surface of the piston to which the device is to be applied, the said guiding members being radially adjustable with relation'to the head.

8. A device for use in the application of piston rings to pistons comprising a feed screw arranged at one end to bear against the head of a piston, a head including a member having threaded engagement with the said screw, and guiding members assembled with the head and having fingers to extend beside the circumferential surface of a piston to which the device is to be applied.

9. A device for use in the application of piston rings to pistons comprisingafeed screw arranged at one end to bear against the head of a piston, a head including a member having threaded engagement with the said screw, and guiding members assembled with the head and having fingers to extend beside the circumferential surface of a piston to which the device is to be applied, the said guiding members being radially adjustable with relation tothe head.

members having guiding fingers to extend beside the circumferential surface of a piston to which the device is to be applied, and a clamping nut having threaded engagement with the feed screw and likewise having threaded engagement with the sleeve and constituting means for effecting longitudinal adjustment of the guiding fingers with relation to the piston and for clamping the guiding members in positions of radial adjustment.

11. A device for use in the application of piston rings to pistons comprising a feed screw, a spider having a sleeve slidably fitting the screw, the said screw having means at one end for bearing engagement against the head of a piston, the said spider having guiding means arranged at intervals in its circumference, guiding members having slotted heads slidably engaging the sleeve and arms extendiing from the heads and coacting with the guiding means to be guided thereby in the radial adjustment of the guiding members, the said arms of the guiding members having guiding fingers to extend beside the circumferential surface of a piston to which the device'is to be applied, and a clamping nut having threaded engagement with the feed screw and likewise having threaded engagement with the sleeve and constituting means for effecting longitudinal adjustment of the guiding fingers with relation to the piston and for clamping the guiding members in positions of radial. adjustment, certain of the guiding members being positioned relatively close to one another whereby to support the terminal portions of a plston ring being guided over the fingers of the said members.

In testimony whereof I aflix my signature.

JOE H. HUBBLE. [L.s.]

arms of the guiding 

